The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2020
Filed:
Mar. 01, 2017
General Electric Technology Gmbh, Baden, CH;
Javier Francisco Chivite-Zabalza, Stafford, GB;
David Reginald Trainer, Derby, GB;
Jonathan Christopher Nicholls, Stafford, GB;
Konstantin Vershinin, Stafford, GB;
Ikenna Bruce Efika, Croydon, GB;
Francisco Jose Moreno Munoz, Navarra, ES;
John Lewis Outram, Stafford, GB;
Rajaseker Reddy Ginnareddy, Stafford, GB;
General Electric Technology GmbH, Baden, CH;
Abstract
Fault protection of a voltage source converter is provided. An apparatus has a chain-link circuit in series with a director switch. The chain-link circuit includes cells including an energy storage element and cell switching elements connected with anti-parallel diodes. Each cell switching element has a cell switching element controller. The director switch includes director switch units, each having a director switching element and a director switch unit controller. Each cell switching element controller monitors for a fault current and turns-off its associated cell switching element and reports a fault event to a fault controller. Each director switch unit controller monitors for a fault current and reports a fault event to the fault controller but the director switch unit control keeps its associated director switching element turned-on. The fault controller monitors for reports of fault events to order the cell switching elements of at least some of the cells to turn-off.